Green Synthesis of Copper Nanoparticles and their Antibacterial Property

  1. Gargi Dinda 3
  2. Dipankar Halder 3
  3. Carlos Vazquez-Vazquez 1
  4. M. Arturo Lopez-Quintela 1
  5. Atanu Mitra 2
  1. 1 Universidade de Santiago de Compostela
    info

    Universidade de Santiago de Compostela

    Santiago de Compostela, España

    ROR https://ror.org/030eybx10

  2. 2 Department of Chemistry, Sree Chaitanya College, Habra, West Bengal
  3. 3 Department of Food Technology & Biochemical Engineering, Jadavpur University, Kolkata-700032
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Journal:
Journal of Surface Science and Technology

ISSN: 0976-9420

Year of publication: 2015

Volume: 31

Issue: 1-2

Pages: 117-122

Type: Article

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More publications in: Journal of Surface Science and Technology

Abstract

We report the synthesis of copper nanoparticle using a completely green protocol. Aqueous copper sulphate solution was used as a precursor of copper nanoparticle whereas L-ascorbic acid and starch acted as reducing agent and stabilizer respectively. Formation of copper nanoparticle was confirmed by colour, UV-VIS spectroscopy and X-Ray Diffraction (XRD) results. The as-synthesized copper nanoparticles show characteristic plasmonic band at 590 nm. High-Resolution Electron Microscopy (HRTEM) shows almost spherical particles having average diameters of 5.7 ± 1.8 nm. As-synthesized copper nanoparticle exhibits antibacterial activity for both Gm-positive bacteria, Bacilus subtilis and Gm-negetive bacteria, Escherecia coli. Plate count and Minimum Inhibitory Concentration (MIC) studies show higher susceptibility of B. subtilis towards copper nanoparticle